A big question for libertarians: what would they do about obesity?

This ideology celebrates willpower, yet scientific research challenges how much of it we have when making dietary choices.

Jason Reed: Obesity rates are at a critical point. But campaigners’ plans to tackle the issue are deeply flawed.

Children’s health is too often weaponised as a justification for pushing through all sorts of unnecessary new punitive taxes and regulations.

Peter Franklin: Why is the right so sweet on sugar?

This is not so much a pro-market position as an anti-democratic one. There is more to politics than market versus state.

Daniel Hannan: Identity politics. It becomes impossible to avoid giving offence, because the offended keep changing the rules.

In an atmosphere when anyone can close down the conversation by saying “I feel uncomfortable”, rational discussion becomes impossible.

Rebecca Lowe: Fight for the right to choose of the poor, the fat and, yes, the stupid

None of these qualities necessarily stop you wanting things, knowing what you enjoy, and being able to weigh up how to decide.

Hugh Byrne and Lucy Mowatt: The case against a tax on sugar

The Conservative priority must instead be to ensure health policy is guided by experts in the field of nutrition, not enthusiastic amateurs spouting sound bites instead of science.

Sunder Katwala: How young people say they will vote – if they do

The share that candidates take of new entrants to the electorate will help to decide the most marginal seats.